(Photo PA) Scotland produced 54% of its electricity in 2016 from renewable sources and in the first half of 2017 saw a 17% increase in generation. So, for the whole of 2017 we can, perhaps, expect an increase of 30% over the previous year. Now, in 2015, all sources generated just over 50 000 Gigawatt hours. http://www.gov.scot/Topics/Statistics/Browse/Business/TrendElectricity So, 54% of that in 2016 would be 27 000 Gigawatt hours. An extra 30%, say, of the 27 000 would be 8…